らくがき超短時間（最大3.5時間くらい）。Doodling very short-time 3.5h max. Youtube --> https://youtu.be/BiQAvNadLk4 Twitch --> https://www.twitch.tv/amane_natsuko Twitter Live --> https://twitter.com/i/broadcasts/1BRJjZWyPXvJw